TennisOne has been named official mobile app for World TeamTennis.

Elena Rybakina withdraws with an abductor injury.

Novak Djokovic and a belly dancer do dance of danger.

Plain White T's Tom Higgenson will perform.

Maria Sakkari celebrates a milestone in Doha.

Roberto Bautista Agut's father passed away during the Davis Cup finals last November.

Defending champion Feliciano Lopez will return.